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boards/arm/stm32l4/nucleo-l496zg: add LPUART gpio defines

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Also update obsolete instructions.

Signed-off-by: Juha Niskanen <juha.niskanen@haltian.com>
This commit is contained in:
Juha Niskanen 2021-09-14 14:12:20 +03:00 committed by David Sidrane
parent 4487b352c0
commit 3d5e6b07b4
2 changed files with 13 additions and 63 deletions
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49
boards/arm/stm32l4/nucleo-l496zg/README.txt
View File

@ -112,50 +112,7 @@ Hardware
in effect but will assume the factory default settings.
Our main concern is establishing a console and LED utilization for
debugging. Because so many pins can be multiplexed with so many functions,
the above mentioned graphic may be helpful in identifying a serial port.
There are 4 choices that can be made from the menuconfig:
CONFIG_NUCLEO_CONSOLE_ARDUINO or CONFIG_NUCLEO_CONSOLE_MORPHO or
CONFIG_NUCLEO_CONSOLE_VIRTUAL or CONFIG_NUCLEO_CONSOLE_NONE
The CONFIG_NUCLEO_CONSOLE_NONE makes no preset for the console. You should still visit
the U[S]ART selection and Device Drivers to disable any U[S]ART remaining.
The CONFIG_NUCLEO_CONSOLE_ARDUINO configurations assume that you are using a
standard Arduino RS-232 shield with the serial interface with RX on pin D0 and
TX on pin D1 from USART6:
-------- ---------------
STM32F7
ARDUIONO FUNCTION GPIO
-- ----- --------- -----
DO RX USART6_RX PG9
D1 TX USART6_TX PG14
-- ----- --------- -----
The CONFIG_NUCLEO_CONSOLE_MORPHO configurations uses Serial Port 8 (USART8)
with TX on PE1 and RX on PE0.
Serial
------
SERIAL_RX PE_0
SERIAL_TX PE_1
The CONFIG_NUCLEO_CONSOLE_VIRTUAL configurations uses Serial Port 3 (USART3)
with TX on PD8 and RX on PD9.
Serial
------
SERIAL_RX PD9
SERIAL_TX PD8
These signals are internally connected to the on board ST-Link
Of course if your design has used those pins you can choose a completely
different U[S]ART to use as the console. In that Case, you will need to edit
the include/board.h to select different U[S]ART and / or pin selections.
debugging.
Buttons
-------
@ -263,8 +220,8 @@ Serial Consoles
----------------
Yet another option is to use LPUART1 and the USB virtual COM port. This
option may be more convenient for long term development, but is painful
to use during board bring-up. However as LPUART peripheral has not been
implemented for STM32L4, this cannot currently be used.
to use during board bring-up. However the LPUART peripheral has not yet
been tested for this board.
Solder Bridges. This configuration requires:

27
boards/arm/stm32l4/nucleo-l496zg/include/board.h
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@ -550,20 +550,20 @@
/* Alternate function pin selections ****************************************/
#define GPIO_USART2_TX GPIO_USART2_TX_2
#define GPIO_USART2_RX GPIO_USART2_RX_2
#define GPIO_USART3_TX GPIO_USART3_TX_2
#define GPIO_USART3_RX GPIO_USART3_RX_2
#define GPIO_USART2_TX GPIO_USART2_TX_2
#define GPIO_USART2_RX GPIO_USART2_RX_2
#define GPIO_USART3_TX GPIO_USART3_TX_2
#define GPIO_USART3_RX GPIO_USART3_RX_2
#if defined(CONFIG_NUCLEO_CONSOLE_ARDUINO)
/* USART6:
*
* These configurations assume that you are using a standard Arduio RS-232
* These configurations assume that you are using a standard Arduino RS-232
* shield with the serial interface with RX on pin D0 and TX on pin D1:
*
* -------- ---------------
* STM32F7
* ARDUIONO FUNCTION GPIO
* STM32L4
* ARDUINO FUNCTION GPIO
* -- ----- --------- -----
* DO RX USART6_RX PG9
* D1 TX USART6_TX PG14
@ -578,17 +578,10 @@
* Use USART3 and the USB virtual COM port
*/
#if defined(CONFIG_NUCLEO_CONSOLE_VIRTUAL)
/* LPUART1 is connector to Virtual COM port PG6 and PG7,
* but there is no lpserial.
*/
/* LPUART1 is connector to Virtual COM port PG6 and PG7. */
/* #define GPIO_USART2_TX GPIO_LPUART1_TX_3 */
/* #define GPIO_USART2_RX GPIO_LPUART1_RX_3 */
# error "No Nucleo virtual console before lpserial is unimplemented"
#endif
#define GPIO_LPUART1_TX GPIO_LPUART1_TX_3
#define GPIO_LPUART1_RX GPIO_LPUART1_RX_3
/* DMA channels *************************************************************/